package main

import (
	"fmt"
	"io"
	"net"
	"time"
	"zinx/znet"
)

/*
   模拟客户端
*/
func main() {

    fmt.Println("Client Test ... start")
    //3秒之后发起测试请求，给服务端开启服务的机会
    time.Sleep(3 * time.Second)

    conn,err := net.Dial("tcp", "127.0.0.1:7777")
    if err != nil {
        fmt.Println("client start err, exit!")
        return
    }

    for {
        //发封包message消息
        dp := znet.NewDataPack()
        msg, _ := dp.Pack(znet.NewMsgPackage(0,[]byte("Zinx V0.6 Client0 Test Message")))
        _, err := conn.Write(msg)
        if err !=nil {
            fmt.Println("write error err ", err)
            return
        }

        //先读出流中的head部分
        headData := make([]byte, dp.GetHeadLen())
        _, err = io.ReadFull(conn, headData) //ReadFull 会把msg填充满为止
        if err != nil {
            fmt.Println("read head error")
            break
        }
        //将headData字节流 拆包到msg中
        msgHead, err := dp.Unpack(headData)
        if err != nil {
            fmt.Println("server unpack err:", err)
            return
        }

        if msgHead.GetDataLen() > 0 {
            //msg 是有data数据的，需要再次读取data数据
            msg := msgHead.(*znet.Message)
            msg.Data = make([]byte, msg.GetDataLen())

            //根据dataLen从io中读取字节流
            _, err := io.ReadFull(conn, msg.Data)
            if err != nil {
                fmt.Println("server unpack data err:", err)
                return
            }

            fmt.Println("==> Recv Msg: ID=", msg.Id, ", len=", msg.DataLen, ", data=", string(msg.Data))
        }

        time.Sleep(1*time.Second)
    }
}